Window-screen.



a. woman. WINDOW SCBEEH.

APPLIUATIOE FILED APILBT, 1912.

4 Patented 0ct.28,1913.

L ]7 1- 26 0 J 9 Z ZZZ ATTORNEY MAMA MIA?" COuVA IHMTON. D. C.

GEORGE W. NORTON, F FLUSHING, NEW YORK.

/ WINDOJV-SCREE-N.

Specification of Letters Patent.

Patented Oct. 28,1913.

Application filed April 27, 1912. Serial No. 694,304.

To all whom it 912 my concern Be it known that I, Gnoncn \V. NORTON, a citizen of the United States, and resident of Flushing, Long Island, in the county of Queens and State of New York, have invented certain new and useful Improvements in Window-Screens, of which the following is a specification.

This invention. relates to window screens and particularly to flexible window screens such as are carried upon rolls and attached to. the sash of the window so that when the sash is raised the screen is extended into the opening of the window.

An object of this invention is to provide improved means for actuating the roll carrying the screen, by the movement of the sash, so-that when the sash is moved to close it, the extended screen will rewind upon the roll.

A further object of the invention is to provide a construction for actuating theoperate effectively to exclude insects.

The invention is set forth in theclaims.

In the drawing which fully illustrates the preferred embodiment of my invention, Figure 1 isa front elevation showing the 'studding and frame of a window provided with myscreen and showing the window sash partly raises, with the screen attached, and so extending into and covering the window opening. Fig. 2 is a vertical section taken through the sill near the side of the window frame with the sash. and screen removed, and illustrating the preferred means for mounting and operating the screen. Fig. 3 is a vertical section taken on the line 33 through the window frame at the Window opening passing through the sill and showing the sash and the preferred manner in which the screen is carried on its roller and attached to the sash. Fig. 4 is a horizontal cross section through the side of the casing,- taken on the line -14.

Referring more particularly to the parts,

1 represents the side casement of a window frame having an inner sill or cap 2 and an outer sill 3.

In applying my invention, I may provide a roller 4 which is supported under the outer sill 3 on suitable brackets 5, and this roller carries a fine mesh metal screen 6 which passes up through a longitudinal slot 7 in the member 3. At the slot 7 preferably a metallic weather strip 8 is provided which projects upwardly and extends between the pulley stiles 9 of the easement, excluding rain from the slot. The pulley stiles 9 in the present embodiment, are provided with vertical slots 10 as indicated in Fig. 4, and the inner pair of these slots receive the edges of the extended screen 6. The rear edge of the stop bead 11 is preferably flush with the forward side of the slot 10'so as to form virtually an extension of the forward wall of the slot. On the rear side of the slot I may provide a small guard bar 12 of angular form, as indicated in Fig. 4, the flange 18 of which is substantially flush with the rear face of the slot.

The ends of the roller 4 are provided with sprocket wheels 14: which carry endless non extensible chains 16, which pass up into the casement 1 in the aforesaid slots 10 in the stiles 9, and thc stiles are provided at an'elevated point with sprocket wheels 17.similar to the sprocket wheels 1% I and about which. the endless chains may pass. The free transverse edge of the screen 6 is attached to a batten 18 which is preferably formed of a metal strip. The ends of this batten 18 are formed into reduced tips 20 which are attached to the forward runs of the chains 16. The batten is provided with' suitable h'asps or catches 22 by means of'which the screen may be readily attached positively or fixedly to, or detached from th bottom rail of the window sash The lower sash 25 slides between the parting head 26 and the stop head 11, and has a slot 27 to receive the weather strip 8. The upper sash which is not illust-rated may be provided with a screen of the same construction as that described and secured .to the sash in the same manner.

hen the sash 25 is raised it will he evident that the screen will be extended. The fact that the screen itself is formed of metal gives-it a certain amount of resiliency so that when a number of turns are on the roller 4; they act in a certain degree as a spring tending to maintain the screen in tenslon. This insures that the screen will.

be held tight or taut when the Window is opened a small amount.

The diameter of the roller 4 is preferably slightly less than the pitch diameter of the,

' sprocket wheels 1-1. As the sash is raised,-

itextends the screen and at the same time the roller 4 is rotated positively by the chain so 'as to pay outthe screen to the moving sash. As the virtual diameter of the roller at. this time is about the same as the diameter of the sprocket, the screen will be paid out sun'iciently fast to follow up the sash. As the; sash is being raised the screen roll decreases in diameter and consequentlythe screen is paid out to the sash at a slower, and slower rate. Since the roller body is of less diameter than the sprocket, it follows that in the upper part of the openingmovement of the sash the screen will not be paid out quite as fast as the sash moves. This will take up any slack that may exist in the screen and insures that the screen will be kept taut. By my arrangement it will be seen that the peripheral V I movement of the roller 4 upon which the screen is wrapped, is slightly less than the corresponding movement of the sash; and the roller surface has a constant amount of movement given to it for any given amount of movement of the sash-at any point in the path of movement of the sash; illlClthe.

amount of movement of the rollers surface is preferably slightly reduced with respect to the movement of the sash.

While I have described above the pre ferred embodiment of my invention, it is understood that this is only one of the many forms my inve'ationmay take, andI do not consider myself limited in the practice of my invention nor in my claims to the present embodiment of the invention.

That I claim and desire to secure by Letters Patent .is:

1. A casement, a sash mounted to slide therein, ascreen roller, a screen wrapped on said roller and attached to said sash, said roller being connected witl said sash to move when said Sash moves, said roller being of a diameter such that the Periphery of saidtroller has a reduced amount of movementwith respect to said sash whereby said screen is maintained in tension when extended.

A casement, a window sash sliding therein, a screen attached to said sash so as to be drawn out into the window opening when said sash is raised, an endless sprocket chain attached to said sash, a sprocket Wheel guiding said chain, and a roller carrying a part of said screen rolled thereupon, said roller being; of slightly less diameter than the pitch diameter of said sprocket wheel, whereby said roller may pay out said screen ata slower rate than said sash moves and maintain said screen in tension.

Signed at New York in the county of New York and State of New York this 22nd day of i-ipril'A. D. 1912.

' GEORGE 1V. NORTON.

Witnesses:

Moses ELY, HENRY F. NATEMEYER. 

